R100s gas tank. No dents. Some permatex repairs on the bottom and one side, as seen in the photos.  I bought this for a project bike and then learned it would not fit. Im working with a r100r mystic frame.  The later  models had a wider underside.  This tank is a narrower model off what appears to be a pre 80s r100s. Typical paint scratches and marks, some very light surface rust around the valve threads and cap, but it's in really good shape.  There is no question I would have used it if it had fit.